You should give her Ruqya and make a lot of Du’ah that Allah cures her and get her back as she was. You should also talk to her and explain it to her that these Jinn can’t harm us and even if they come up to us, we shouldn’t show them that we are afraid of them.

I have 10 years old daughter. She had seen a ghost a week a go in our bathroom. I guess it is a kind of jinn. She was so so scared, and until now she still can’t forget it.